Update description version
1. Tidied up the initialisation.
2. xmin now set to the minimum x-value
3. Moved to version 0.14.3
Version 0.14.3
Minor README tweaks
Initial version of r-dev branch
Added a parameter to control switching between discrete and stochastic simulators.
Bumped to version 0.14.4
Merge branch 'master' into continuous_pl